fix(ci): clear Vitest cache before running tests

Add Vitest cache clearing to test-setup-script to prevent stale cached
test helpers from causing failures. This fixes issues where Vitest caches
old versions of test helper files that have been updated or removed.

The cache is cleared before building to ensure all test runs use fresh
helper code, particularly after the removal of broken mock setup helpers.

Author: jdalton

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
     uses: SocketDev/socket-registry/.github/workflows/ci.yml@d8ff3b0581d799466cfbf150f715c1a4bf9f84a5 # 2025-10-23
     with:
       working-directory: 'packages/cli'
-      test-setup-script: 'cd packages/cli && pnpm run build'
+      test-setup-script: 'cd packages/cli && rm -rf node_modules/.vite && pnpm run build'
       lint-script: 'cd packages/cli && pnpm run check'
       type-check-script: 'cd packages/cli && pnpm run type'
       test-script: ${{ inputs.skip-tests && 'echo "Tests skipped"' || 'cd packages/cli && pnpm run test:unit' }}